Selec MiBRX 72X72 Modular PLC
Selec MiBRX-72×72 Modular PLC Base Module – 230V / 24VDC, 2-Slot Micro Modular PLC
Compact 72×72 mm modular PLC with pluggable display, flexible I/O card slots, RS485 Modbus RTU communication, RTC, and high-speed inputs. Ideal for OEM machines, automation panels, and customized control logic applications.
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The Selec MiBRX-72×72 Modular PLC is a compact micro-PLC engineered for OEMs and automation system integrators requiring flexible I/O expansion, pluggable displays, high-speed inputs, RTC, and Modbus RTU communication. Its 72×72 mm design makes it suitable for dense control panels while offering powerful ladder logic and HMI configuration through SelPro software.
Key Features
72×72 mm modular PLC with 2 I/O expansion slots
Pluggable LCD or 7-segment display options
RS485 Modbus RTU for communication
4 Digital Inputs (incl. 1 Fast Input, 1 Analog Input–Voltage)
Relay outputs: 3RO (230V model) / 4RO + 1AI-I (24VDC model)
NTC input for temperature monitoring
Real-Time Clock with ±4 seconds/day drift
High-speed fast input up to 5 kHz
Supports multiple I/O cards (digital, analog, AO, load cell, fast I/O, WiFi, datalogger, etc.).
Windows-based ladder logic & HMI programming (SelPro)
Panel-mount, IP65 front protection
Technical Specifications
| Parameter | Specification |
|---|---|
| Display options | LCD 8×2 / 7-segment LED modules (optional) |
| I/O Slots | 2 expansion slots |
| Digital Inputs | 4 DI (incl. 1 fast input, 1 configurable AI-V) |
| Fast Input Speed | Up to 5 kHz |
| Relay Outputs | 3RO (230V) / 4RO (24VDC) |
| Analog Inputs | 1 NTC + 1 Voltage (0–10V), plus optional card inputs |
| Analog Input Accuracy | ±0.25% FS ±1 count |
| Analog Outputs | Available via optional AO card |
| Communication | RS485 (Modbus RTU), 2-wire, up to 115200 baud |
| RTC | Yes (±4 seconds/day) |
| Program Memory | 240 KB |
| Data Memory | 32 KB |
| EEPROM | 8 KB |
| Scan Time | Typical 1 ms, minimum 200 μs |
| Aux Supply (230V model) | 180–270V AC |
| Aux Supply (24V model) | 18–30V DC |
| Power Consumption | 8 VA (AC) / W (DC) |
| Operating Temperature | 0°C to 55°C |
| Protection | IP65 front, IP20 terminals |
| Dimensions | 76×76×82 mm |
| Weight | 330 g |
Applications
OEM machinery automation
Packing machines
HVAC & building control
Industrial process monitoring
Custom PLC logic applications
Data acquisition & logging systems
Machine retrofitting projects
What’s in the Box?
MiBRX-72×72 PLC base module
Terminal connectors
User manual (digital)
Warranty card (manufacturer)
FAQ
Q1. Can I expand the I/O capacity?
Yes, the module supports 2 I/O slots with multiple card types, including digital, analog, load cell, AO, WiFi, and data logging.
Q2. Does it support Modbus communication?
Yes, RS485 Modbus RTU (slave mode) is supported.
Q3. Can fast inputs be used for encoders?
Yes, the fast input supports up to 5 kHz and encoder modes (uni/bidirectional, quadrature).
Q4. What software is used for programming?
SelPro—Windows-based ladder logic and HMI configuration software.
Q5. Is the front panel waterproof?
The front panel is IP65 rated.
Q6. What is the difference between 230V and 24VDC models?
230V model: 3 relay outputs
24VDC model: 4 relay outputs + 1 current AI